CCFDATAStorage Class Reference

#include <CCFDATAStorage.h>

Collaboration diagram for CCFDATAStorage:

Public Member Functions
CCFDATAStorage class
@implemented Writes a CFDATA block to the file Parameters Data Pointer to CFDATA block for the buffer Buffer Pointer to buffer with data to write BytesWritten Pointer to buffer to write number of bytes written Returns Status of operation
	CCFDATAStorage ()
virtual	~CCFDATAStorage ()
ULONG	Create ()
ULONG	Destroy ()
ULONG	Truncate ()
ULONG	Position ()
ULONG	Seek (LONG Position)
ULONG	ReadBlock (PCFDATA Data, void *Buffer, PULONG BytesRead)
ULONG	WriteBlock (PCFDATA Data, void *Buffer, PULONG BytesWritten)

Private Attributes
char	FullName [PATH_MAX]
FILE *	FileHandle

Detailed Description

Definition at line 14 of file CCFDATAStorage.h.

Constructor & Destructor Documentation

CCFDATAStorage()

CCFDATAStorage::CCFDATAStorage

(

)

Definition at line 31 of file CCFDATAStorage.cxx.

{
    FileHandle = NULL;
}

~CCFDATAStorage()

CCFDATAStorage::~CCFDATAStorage ( )

virtual

Definition at line 42 of file CCFDATAStorage.cxx.

{
    ASSERT(FileHandle == NULL);
}

Member Function Documentation

Create()

ULONG CCFDATAStorage::Create

(

)

Definition at line 56 of file CCFDATAStorage.cxx.

{
#if defined(_WIN32)
    char TmpName[PATH_MAX];
    char *pName;
    int length;
 
    if (tmpnam(TmpName) == NULL)
        return CAB_STATUS_CANNOT_CREATE;
 
    /* Append 'tmp' if the file name ends with a dot */
    length = strlen(TmpName);
    if (length > 0 && TmpName[length - 1] == '.')
        strcat(TmpName, "tmp");
 
    /* Skip a leading slash or backslash */
    pName = TmpName;
    if (*pName == '/' || *pName == '\\')
        pName++;
 
    strcpy(FullName, pName);
 
    FileHandle = fopen(FullName, "w+b");
    if (FileHandle == NULL)
        return CAB_STATUS_CANNOT_CREATE;
#else
    if ((FileHandle = tmpfile()) == NULL)
        return CAB_STATUS_CANNOT_CREATE;
#endif
    return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::NewCabinet().

Destroy()

ULONG CCFDATAStorage::Destroy

(

)

Definition at line 97 of file CCFDATAStorage.cxx.

{
    ASSERT(FileHandle != NULL);
 
    fclose(FileHandle);
 
    FileHandle = NULL;
 
#if defined(_WIN32)
    remove(FullName);
#endif
 
    return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::CloseCabinet().

Position()

ULONG CCFDATAStorage::Position

(

)

Definition at line 147 of file CCFDATAStorage.cxx.

{
    return (ULONG)ftell(FileHandle);
}

Referenced by Seek(), and CCabinet::WriteDataBlock().

ReadBlock()

ULONG CCFDATAStorage::ReadBlock	(	PCFDATA	Data,
		void *	Buffer,
		PULONG	BytesRead
	)

Definition at line 192 of file CCFDATAStorage.cxx.

{
    *BytesRead = fread(Buffer, 1, Data->CompSize, FileHandle);
    if (*BytesRead != Data->CompSize)
        return CAB_STATUS_CANNOT_READ;
 
    return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::CommitDataBlocks().

Seek()

ULONG CCFDATAStorage::Seek

(

LONG

Position

)

Definition at line 165 of file CCFDATAStorage.cxx.

{
    if (fseek(FileHandle, (off_t)Position, SEEK_SET) != 0)
        return CAB_STATUS_FAILURE;
    else
        return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::CommitDataBlocks().

Truncate()

ULONG CCFDATAStorage::Truncate

(

)

Definition at line 121 of file CCFDATAStorage.cxx.

{
    fclose(FileHandle);
#if defined(_WIN32)
    FileHandle = fopen(FullName, "w+b");
#else
    FileHandle = tmpfile();
#endif
    if (FileHandle == NULL)
    {
        DPRINT(MID_TRACE, ("ERROR '%i'.\n", errno));
        return CAB_STATUS_FAILURE;
    }
 
    return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::CommitDisk().

WriteBlock()

ULONG CCFDATAStorage::WriteBlock	(	PCFDATA	Data,
		void *	Buffer,
		PULONG	BytesWritten
	)

Definition at line 220 of file CCFDATAStorage.cxx.

{
    *BytesWritten = fwrite(Buffer, 1, Data->CompSize, FileHandle);
    if (*BytesWritten != Data->CompSize)
        return CAB_STATUS_CANNOT_WRITE;
 
    return CAB_STATUS_SUCCESS;
}

Referenced by CCabinet::WriteDataBlock().

Member Data Documentation

FileHandle

FILE* CCFDATAStorage::FileHandle

private

Definition at line 30 of file CCFDATAStorage.h.

Referenced by CCFDATAStorage(), Create(), Destroy(), Position(), ReadBlock(), Seek(), Truncate(), WriteBlock(), and ~CCFDATAStorage().

FullName

char CCFDATAStorage::FullName[PATH_MAX]

private

Definition at line 29 of file CCFDATAStorage.h.

Referenced by Create(), Destroy(), and Truncate().

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The documentation for this class was generated from the following files:

• sdk/tools/cabman/CCFDATAStorage.h
• sdk/tools/cabman/CCFDATAStorage.cxx